docs: def set(self, key, samples, sampling_rate):
          """
          Set the samples and sampling-rate for the given key.
          Existing data will be overwritten.
          The samples have to have ``np.float32`` datatype and values in
          the range of -1.0 and 1.0.
  
          Args:
              key (str): A key to store the data for.
              samples (numpy.ndarray): 1-D array of audio samples (np.float32).
              sampling_rate (int): The sampling-rate of the audio samples.
  
          Note:
              The container has to be opened in advance.
          """
          if not np.issubdtype(samples.dtype, np.floating):
              raise ValueError('Samples are required as np.float32!')
  
          if len(samples.shape) > 1:
              raise ValueError('Only single channel supported!')
  
          self.raise_error_if_not_open()
  
          if key in self._file:
              del self._file[key]
  
          samples = (samples * MAX_INT16_VALUE).astype(np.int16)
  
          dset = self._file.create_dataset(key, data=samples)
          dset.attrs[SAMPLING_RATE_ATTR] = sampling_rate